Lark MCP Server

@junyuan-qi

Repository

Basic information

About Lark MCP Server

No overview available yet

#lark-mcp-server#mcp #lark

Lark MCP Server config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

Lark MCP Server tools

Tool list not available yet

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Overview

What is Lark MCP Server?

Lark MCP Server is a Model Context Protocol (MCP) server implementation for Lark/Feishu. It bridges AI models with Lark’s collaboration platform, enabling MCP‑compatible applications to send messages, manage calendar events, and interact with Lark services.

How to use Lark MCP Server?

Clone the repository, install dependencies (npm install), and build (npm run build). Then configure an MCP client—such as Claude Desktop—by adding the server to its claude_desktop_config.json with the required environment variables (LARK_APP_ID, LARK_APP_SECRET, LARK_USER_ID, LARK_CALENDAR_ID, LARK_USER_ACCESS_TOKEN). Restart the client to connect.

Key features of Lark MCP Server

Send direct messages to Lark users
List calendar events within a specified time range
Create new calendar events with custom details
Add attendees (users, groups, meeting rooms, external emails) to events

Use cases of Lark MCP Server

An AI assistant sends a notification to a Lark user
An AI agent checks your calendar for upcoming events
A scheduling bot creates a meeting and adds participants
Automated event creation from natural language requests

Frequently asked questions

What are the prerequisites for running the server?

Node.js v18 or higher, a registered Lark/Feishu application with appropriate permissions, and a user access token for calendar operations.

How does the server communicate with MCP clients?

It uses the standard I/O (stdio) transport layer. MCP clients launch the server as a child process and communicate through its stdin and stdout channels.

How do I set up the server with Claude Desktop?

Add the server configuration to `claude_desktop_config.json`, providing the correct path to the built `index.js` and the required environment variables. Then restart Claude Desktop completely.

What are common issues and how do I troubleshoot them?

Check server logs (written to stderr). Common causes include missing environment variables, expired access tokens, insufficient Lark application permissions, or invalid request parameters.

What authentication does the server use?

Authentication is handled via environment variables: Lark app credentials (`LARK_APP_ID`, `LARK_APP_SECRET`) and a user access token (`LARK_USER_ACCESS_TOKEN`).

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